Container blank



FIG. 1 is a perspective view of the container blank showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof, as seen from the left-hand side of FIG. 2.

The dash lines represent score lines. 

The ornamental design for a container blank, as shown. 